Sheet-glass-drawing machine.



IJW. UOLBURN. SHEET GLASS DRAWING MACHINE. APPLICATION FILED MAY 16,190B.

PatentedDec. 29, 1914.

e BEEETEFSHEET 1.

i 1 I I c' bl 4 I m Wnwsssss BY H1: Arromvtv:

I. W. COLBURN.

SHEET GLASS DRAWING MACHINE.

APPLICATION FILED MAY 16, 1908.

1,1226%, rammed De0.29, 1914.

6 BHBETSSHEET 2.

INVENTOR v I I a J 4': 6mm (QM w M BY H/s A'r-rawwzvs 1,

I. W. GOLBURN.

SHEET GLASS DRAWING MACHINE. APPLICATION FILED MAY 16, 1908."

3 9 1 gg gg Patented Dec. 29, 1914.

6 SHBETSSHEET 3.

\zvo- Wmvsssss 5 BY HIs'AiToRNEYS 1 1m 7 tam) I INVENTOR I. W. GOLBURN.

SHEET GLASS DRAWING MACHINE.

APPLICATION FILED MAY 1c, 1908.

1,122,692, 7 Patented Dec. 29, 1914.

6 SHEETS-$113111 4.

INVENTOR r M BY His Arrowuavs w; m wl) I. W.'GOLBURN.

SHEET GLASS DRAWING MACHINE. APPLIOATION nun MAY 16, 1908.

Patented Dec.29,1914.

6 SHEETS-SHEETB.

a MGR. 1 WITNESSES NvENTOP v BY H/s Arrow/vars I. W. GOLBURN. SHEETGLASS DRAWING MACHINE.

APPLICATION FILED MAY16,-190B.

1,122,692. Patented Dec. 29, 1914.

6 SHEETSSHEET 8.

W'TNESSES NVENTOR W @A 9W 2 BY His Arron/van? H rrED mvme w. connumv,or'rnmxtni, rENNsYLvAmA; essrenon, nv mnsn'n ASSIGN- mnnrs, TO zronnnoemis'js comrimmbr TOLE O; 01110,; aconroa rro s creme.

"sn'nnr-emss-naewme meoiir m.

s eo'mceudn of Letters latent.

: Application filed May 16,1908. Seria1 ho'.433,292.

To all whom it may concern Be it known'that '1,- InvnveW. COLBURN, ofFranklin,- Pennsylvania, 7 have invented anew and usefullmprovement-intshee Glass-Drawing Machines, which improvement is fullyset forth' in .the following specification. a

- Thisinvention relates'to the ar t of drawing sheet glass. In thisart-glass drawn in sheet form presents edgeswhich it is .necessary totrim 01f. The necessity for this trimming-anay arise fromseveraLc'auses, such as -the factthat the-edge, portions-do not formaastraight line; that=the sheet is of irregular thicknesses at the edge 1PI'tl0l1S;

- or that the surface of the edge-portion has beenmarred in the act of:drawing the sheet,

this latter marring effect bein particularly noticeable when the sheetgist awn by apparatus such as that showmand-described-inmy U. S. 1application Srr N03 etl32'9fi -filed Jan.- 29th, 1908," and myUU-S-Patent-No.

the edges of the sheet ame-engagedbyoppositelydisposedrolls, to assishinthe d awing operation.- :Heretoforethde-tzgimmingwf the edges of thedrawn sheet .haisgheen 7 performed -by-a cutter:omtheicuttingtahlezatterthe sheet "has been severed (into; sectjpns, {and deliiwered from themachind involved an appreciable 'expense,;ts ince--1tgeonsmned the time?"of 1askillcdbperator, .-and-- thBnQ i jecti-ofthe present invention isate provide means in: connection with: thei sheet glass drawingmachine-; for.-automatica ly tr mming' the edges of the sheettoithe-endzthat the sheet when delivered =fr0ri1 lthe machi-ne tothecutting table will be {inn-conditionto be out into commercial sizeswithout the reliminary trimming-bf. the edges 'thereof y'the-cutter -r 7With this object, in View, thein'vention consists in the combinationwith sheet glassdrawing apparatus, of; means -'.automatically scoringthe sheet of glass as it-isdrawnand while still ina. plastic condition,thereby establishing a "line of fracture'o'r cleavage W lma-1m eremblems; established by the I cooling'and contraction of the sheet andthe passing-of the sheet over the bending-roller of the machine,i-causesthe edge portions'of the sheetto'zbe -.separated or severed-therefromalong the line-fof-jracture oncleavage fthus secured Since the scoringdevices act upon the edge portions of the sheet of glass when the sameis in a plastic condltion, and therefore heated to a high temperature,the scoring devices would become highly heated, and

thus liable to stick to. the-plastic glass of the sheet unless meansareprovided for v Patented Dec. 2t), 1914. i

cooling the scoring devices, to this end I provide means -forcirculating afcooling find, such as water, through the scoriu apparatus,whereby the temperature oi? the scoring devices is maintainedata degreewhereit will not stick to the plastic glass.

. My improved scoring device .may-"lqe, ap-

plied to ama'chine employing the edgecpne .tacting rolls set Eorth in myabove mentloned applications,,. and when [so employed Imay eitherconstruct and'o'perate, the. scar devices distinct from theedge-engaging rolls, so that the scorin device operates immediatelyafter the rol shave performed their iunction, or I maso combine thescoring devices and the. r0 is into an unitary structure that therolls-and the scoring devices:operate. -simultaneously.

Theinventive idea-involved is-capable of receiving: a variety of'mechanical; ex ressions,- s ome of which, for thesake of 111115.tration, are shown in the accompanying dr wings, in ,Which; v A gFigure l is a broken top plan view illusi- 0 I I v gtratingthenventlon;Fig. 2 is a side,,elevat onof Fig. 1 Fig, 3 is an end viewsof rzerticallongitudinal section of Ta glass drawing .machine with my inventionapplied thereto; Fig. 9 is a transverse vertical Section on the lineIX-IX-of Fig. 8; Figs. 10 to '22 inclusive illustrate some of. the formswhich my improved scoring device may assume; Fig; 23 is a top plan viewShOWIIIgIXIY Improved scoring device com- .binedi -in a single structurewith my improved side-holding rolls described in my aforesaidapplications; and Fig. 24 is c side elcva m of Fig. 23. p c

Referring to the drawings, in which like numerals indicate like partsthroughout the several views, and turning first to Figs. to 5 inclusive,1 and 2 indicate two disks 5 mounted respectively on hollow shafts 3 and4, which pass revolubly in and are supported by bearings 6 and'5. At therear end of the hollow shafts 3 and 4, stuffing boxes. 7, 7, areprovided, and'through these stufiing boxes there are passed into thetubular shafts 3 and 4, pipes 8, 8, which pipes extend through theshafts and into the hol- 1 low hub portion of the disks. Any coolingmedium, such as water, may be passed in' through the i es 8 to thehollow hub portion of the annular space between the pipes 8 and theshafts 3 and 4 to the outlets- 9, 9, through which it is discharged. Bythis means the temperature of the disks may be readily regulated so asto secure the best results.

The bearing 6 is rigidly mounted upon a suitable base v10 (see. Fig. 5),and receives not-only'the shaft 3 which carries the disk 2, but also theshaft 11 which carries the drawing roll 12. The bearing 5 which carriesthe shaft 4 for the disk 1 is so mounted as to be capable of a slighthorizontally'rotative'movement, as is also the bearing 13 for a thetubular shaft 14, which carries the draw- .5 in drawing the same,

s driven from any suitable source of power,

and preferably through the medium of a varia 'le speed pulley, mesheswith miter gear 17, upon the shaft of which there is secured the gearwheel 18. Gears 19 and 20 15 on the shafts 3 and 11 both engage the gear18. Motion is transmitted from shaft 3 to shaftyt by means of theintermeshing gears 21, 21 Fig.1, and'motion is transmitted from shaft 11to shaft 14through intermesh- 5o. ing gears 22, 22. Bearings 5 and 13'asabove noted are mounted to oscillate around'pin 25, to the end that thedisk 1 and the roll 15 may headjusted relatively to the disk 2 and theroll 12, the said disk 1. and roll 15, how-v 5 5" ever, bein 'normallyheld in close proximity to the disk- 2 and the roll 12 by reason of thespring-actuated connection 31 attached re-. spectively to the firms 26and 27- extending rearwardly from the bearings 5' and 13. In

so order to determine the depth of the score ia'pai t lin'e, thedistancebetween the eripheries of the disks 1 and 2 is regulated y means of aset screw 28 passing-through ascrew-threaded lu in the bearin andreacting against of the bearing 6 (see Fig, 1). -By

a e v i V is s, and returns through the mechanism herein shown thismeans the inward movement of the hearing 5 under the influence of thespring connectio'n 31 is limited or controlled.

. Referring to Fi s.'10 to 22, I have there shown some of t e formswhich my imroved sheet scoring device may assume. In

g. 10 similar disks are laced with the corresponding portions of t eirperipheries imme iately opposite each other, whereas in Fig. 11 the twodisks are shown somewhat closer together than in Fi 10, so that thecutting or scorin edges 0 the disks are'not exactly opposite y'disposed,but will act in different vertical planes. In Fig. 12 one'of the disks(2) bass groove while the other has a knife-like ridge or edge on itsperiphery, which is so positioned as to partially enter the groove onthe o osite disk, while in Fig. 13 one of the disks with a fiat, knurledperiphery oppositely disposed to a knife-like ridge or edge on the-other disk. In Fig. 14: two oppositely disposed disks (1 and 2 withrounded edges are shown. In Fi 15 th re isf-illustrated the rolls 12 and15 foriassis ing in the drawing of the edge portions of the sheet ofglass,

which rolls have, secured to their inner ex-' edge-drawing rolls areunited in a sin le structure, but a single} 0 erating shaft or each rolland its combine disk is necessary,- .thereby dispensing with two of theoperating shafts used when the form shown in Fig. 1 1S emplo ed. Fig; 16shows a construction similar to ig. 14, exce t that the disks differsomewhat in form; igs. 17 and 18illus- .trate' forms of disks havingserrated edges spaced far enough apart so that the serra- (2) isprovided 7 tions thereof do not intermesh, whereas in Figs. 19 and 20,similar, disks'(1 and 2) are illustrated placed close enough togetherfor the in'termeshing action to occur. In'Figs.

21 and' 22, one of e disks (1?) is shown as having a serrated ed e,whereas the other (2) has aplain perip ery..

In Figs. 6 to 9 inclusive, I have shown my'- improved -scoring device,combined with means for drawing sheet glass, w ere1n the glass is drawnin sheetform from the mass of molten glass in the'working chamber andpassed upward over a bending roll 29 and onto an endless'carrier 35,where i is seized by grip bars 36 on an endlessc am and therebypropelled through the closed cham-' her and into-the leer 30. 'Thisportion of my drawing machine has been Npreviously completely describedin Patent o among others, and need not, therefore, be

described herein. As clearly shown in these figures, the edge portionsof the.'sheet of glass as itemerges from the mass of molten v greasesglass are seized between the two oppositely hatched or corrugated orotherwise roughened, produce roughened edge portions 24,

24, on the sheet 0 lass 32. These rollers are mounted and rivensubstantially .in the manner shown in my previous applies tions beforementioned. Mounted diately above -the rolls 12 and 15 and onopposite'sides of the sheet of glass adjacent to each edge are the twodisks 1 and 2, as will be clearly understood froman inspec tion of Figs.7 and 9. The shafts bearing the disks 1 and 2 extend a little furtherinward than do the shafts bearing the rolls- 12 and 15, so that thescoring disks act upon the sheet just inside of the roughened por--tions 24, 24, and by virtue ofthe scoring disks being near the surfaceof the molten material, act upon the .sheet 32 while it is in aplasticcondition, therebyscorin the lines 23, 23, just inside of the rougheneportion 24, 24. As the sheet advances over the bending roll 29and intothe drawing chamher, the temperature of the sheet is lowered, and as itcontinues to advance from the drawing chamber into the leer thetemperature being still further lowered, strains are set up in the sheetdue to the contraction incident to the coolin action, and the roughenededges of the s set. are thereby caused to fracture or break awayfrom themain sheet along the score lines 23, 23. r

'. 23 and 24,- there is Referring to Figs *therein shown a pair ofwidth-maintaining and edge-drawing rolls 12 and 15, having on theirextreme inner ends disks 1", 2",

the construction of shafts, rolls and ipes forconducting the coolingfluid, and the 'form of disks bein all substantially as shown in Fig.16. ese rolls-are mo on the shafts 3 and 4, which shafts are mounted inbearings 5', 6', the bearin 5 being so mountedas to be capable ofa sh hthorizontally rotative movement, in or or that the roll 12 and disk l"may be withdrawn from or caused to approach the-roll 15 and disk'Q asdesired. A lever 10' is rigidly attached to the bearing 5 and projectsrearward, and at the outer end of said lever is attached a springconnection 11', the normal action of which is to pressthe roll 12 andthe disk 1 toward the roll 15' and disk 2", the limitations on thisaction being established by the set screw 28' passing through ascrew-threaded lug on the bear The shaft 3 is driven by means of a mitergear 37 driven from any suitable source of :fmWm'and meshing with mltergear .38 on the shaft 3, which shaft is connected shaft other thancuttingthe glass intocommercial i ac tion of the sheet of unted side ofthe portionengaged .surface of the edge rtiono v scribing witnesses,ing-5' and abutting a part of the bearing 6'.

,4 by spur gears 39 and on the two shafts 3 and 4respectivel It will beseen that by combining the si e-holding rolls and the scoring disks inthis manner, the general construction is much simplified.

By the use of the apparatus and devices I am enabled to draw a abovedescribed f uniform width and simulsheet of glass '0 taneously score theedge; portions of the clean-cut ed es, leaving no work to be performedby e cutter on the cutting table sizes.

a What is claimed is:--

-1. In a sheet glass drawingnraehin 'the combination of means fordrawing a sheet of lass of uniform width, with a .pair of sha whoseinner ends lie approximately adjacent to the opposite surfaces of the,edge portions of'the sheet, a scoring disk births mner end of each ofsaid shafts, yielding means normally holding said disks in operativerelation with the sheet, and means for adjusting or regulating the limitof action of said yielding means.

2..In a sheet lglass drawin combination wit means for awing a sheet ofglass of uniform w-i th of a pair of shafts whose inner ends are; ajacent to and on opposite sides ofthe edge portion of the sheet, a airof ed ho ding rolls on the inner en of said; site 'tion to engage the opsite o the edge oreet, and air of on the innenends of said rolls wh theglass is scored 'longitudinall iny the re on saidshafts." vs

1 3. In a sheet glass drawin machine, means for drawing asheet of g ofumform width .in bearing, a shaft revolubly mounted in said bearing withits inner end ad'aoent to one the sheet, a second shaft mean onanioscillating hearing with its innerjportion adjacent to the o positesurface, of the edge portion of the s eet, and a scori disk on theinntr'. end ofeachofsaidsha .-i In testimony whereof I'have signed thismachine, the

she

combination with a rigid specification .m the presence of two sub-IRVING w COLBUltfi Witnesses:

Imam, Louisa Bases.

